Mazda Rx8 Compression Test | EASY, FAST, CHEAP!

How to test Mazda Rx8 compression at home.
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-----------------------------------------------------
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🟠JACK & JACK STANDS= LOCAL HARDWARE STORE
-------------------------------
🇬🇧 UK
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🟠JACK & JACK STANDS= LOCAL HARDWARE STORE
*DOWNLOAD COMPRESSION CALCULATOR EXCEL*
www.drivenbymadness.eu/downloads
🟢My Website: www.drivenbymadness.eu
⚫️Tiktok: / dbmadness1
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Due to factors beyond the control of DrivenByMadness, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. DrivenByMadness assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. DrivenByMadness recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of DrivenByMadness, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not DrivenByMadness. By clicking on the provided links in the description or comments, you are opening an affiliate link to Ebay or Amazon. By purchasing an item trough my link i receive a small commission at no additional cost to you.

[@Drivenbymadness]

If you want to check out the items mentioned in the video, they are linked below: 🇺🇸 USA & ASIA: 🟠PISTON COMPRESSION KIT: amzn.to/3gAbPxH 🟠THIN TWEEZERS: amzn.to/3eSBS2Z 🟠21mm SPARK PLUG SOCKET: amzn.to/3VUEHkz 🟠1/2 RATCHET: amzn.to/3TpHDEa 🟠CROSS WRENCH: amzn.to/3MXRbUs 🟠SOCKET EXTENSION BAR: amzn.to/3FdQhl7 🟠FLEXIBLE SOCKET HEAD: amzn.to/3RA9jVx 🟠JACK & JACK STANDS= LOCAL HARDWARE STORE ----------------------------------------------------- 🇪🇺 EUROPE: 🟠PISTON COMPRESSION KIT: amzn.to/3snlfzu 🟠THIN TWEEZERS: amzn.to/3eV4GYu 🟠21mm SPARK PLUG SOCKET: amzn.to/3snw98w 🟠1/2 RATCHET: amzn.to/3F8nkXp 🟠CROSS WRENCH: amzn.to/3StHmPn 🟠SOCKET EXTENSION BAR: amzn.to/3F8NKIB 🟠FLEXIBLE SOCKET HEAD: amzn.to/3wW6iqB 🟠JACK & JACK STANDS= LOCAL HARDWARE STORE ------------------------------- 🇬🇧 UK 🟠PISTON COMPRESSION KIT: amzn.to/3srPhSs 🟠THIN TWEEZERS: amzn.to/3SrVU22 🟠21mm SPARK PLUG SOCKET: amzn.to/3skOcfc 🟠1/2 RATCHET: amzn.to/3srQgSE 🟠CROSS WRENCH: amzn.to/3gwVTwj 🟠SOCKET EXTENSION BAR: amzn.to/3goG4HW 🟠FLEXIBLE SOCKET HEAD: amzn.to/3wVvoGh 🟠JACK & JACK STANDS= LOCAL HARDWARE STORE

[@DaGhostChild]

@1:09 I see there is like a gap in the lower side, between the red paint and the black lip, near where you put the jack up support underneath the car to level up the car. I've just bought an RX-8 and my car has the same gaps on both sides. Do you know what could be the cause of this? since yours had it too at least in this video

[@eartouch]

Thanks a lot for the tutorial, i will do my own test this weekend. You already helped me a lot with my rx, it runs great now. I just wanted to give you some advice for slowing down the video in adobe premiere (thats something i can maybe help out a little bit). Try this different approach instead of right clicking on the clip in the timeline and changing the speed, because that acually doesnt make use of the 60 fps and just skips frames. Go in the media browser inside of your premiere project and right click the video file and select: modify -> interpret footage. Then in the next window you'll see the frame rate settings, select "Assume this frame rate:" and change it to whatever you want your final clip to be, for example 30 fps. Now your 60fps footage is "naturaly" slowed down to 30fps making it twice as long as the original clip - you will see a huge increase of quality and therefore readability in the pressure reading. Also helpful for making smooth carshots :D

[@theshitlist9862]

Indeed, your diligence and stringent research of new, old, proven, and theorized mods,and their realistic changes and priority are a very welcome guidance and reassurance. Thank you for taming our anxiety,, self doubt.. By supplying all the factors,and options for a dependable plan of attack regarding any build style.a no b.s. multi build roadmap. " Driven By Madness " and " Slip Angle Media " are the . Greatest tools I use on my - 8- . Thank you so much.

[@erikd.k]

Yeah..... Easy......

[@enda0man]

Well if you were buying an RX-8 and you had a bit of time to chek the car before you payed a few grand. I see this as easy.

[@Rich1781]

i looked up and he is on adobe after effects lol

[@junbox618]

Great video. Perfect and to the point

[@wormsali]

Thanks buddy. Saving me hundreds of $'s

[@patrickzhang9738]

Hi, really enjoy all you rx8 videos and I just did the compression test today to my 2010 RX8 R3 as well. But just wondering why you add the difference between MAX PSI and Highest PSI to the PSI reading to get the REAL PSI? Have been doing research online but seems can’t find anything related to this. Thanks

[@jairoumana4569]

Awesome video! I've been meaning to test my compression just to gauge where my engine is at and this video really helps a ton. Thank you for always putting out great content. Keep up the great work! My madness has been driven. lol

[@Drivenbymadness]

Jairo Umana I see what you did there 😜 now it's driven to succeed 👌 thanks man! All the best for your compression test 😊

[@DCGULL01]

Thank you for the increased detail, it helps! But, please 'reduce your intake' because even to this fast talking Yankee- you deserve a speeding ticket! Add in the required mental 'Slovenian English to 'Merican' translating software, and, you need to reduce speed an additional 20%, Krys! However, I really like this updated version, because, I know that you verified data with multiple folks, showed your work, helped with the video stream (I needed that!) and validated results- including altitude! Once again- U da Best, and, I know that tons of other people appreciate your videos as well. Thanks for the extra effort- it's a big cost savings over a rotary tester ($300.00 USD!), and, does come out pretty close. Note: Gotta find out what you are taking, I could do my whole job (9+ hours) in 45 minutes at your pace... Keep 'em coming, DBM!

[@Drivenbymadness]

David C. Gulliver You're just need the right amount of coffee to keep up ;) Or maybe start the Chris Jackson breakfast diet :P hahah Thank you so much man! Yeah, i took my time and had people analyse the video to spot any mistakes and add more accuracy to the topic. I think it came out very well, and the re-make was good move. Yeah, a rotary tester does have a pretty sexy price tag, but if you think about it, you pay 300, and test the compression to 6 friends for 50$, and you've paid it off. The problem is finding 6 friends that have a rotary engine hahah. Naah, i'm sure you'll do it just as fast. You got all the steps you need 😊

[@thealgerianman7275]

Huh..... not as easy as i thought Great video by the way

[@vimprajapati8694]

Hi there, I was wondering how would the results from a "home test" like this compare to the results conducted by a professional garage using a dedicated rotary compression tester? Thanks :)

[@marksmith3554]

Thanks for the info. Can you explain the maths behind why you add the difference between the max psi and best rotor psi value! With the gauge valve removed are you saying the pressure reading (90psi) is just inaccurate and is actually really the 110psi recorded when the valve is in the pressure gauge? Therefore, the key part of the vid is using the go pro and editing software to be able to see the difference between the 3 faces of the rotor. Anyone done this and then compared to a trusted rotary testing service/device to see how close/accurate it is?

[@mustafaalazey9770]

If the car starts and when it’s warm up turn off what’s the problem?

[@mokokawi]

Do you only check trailing plug??... I want to check all 4.... Can I take all 4 out, and test each one... Or do you have to leave plug in, on opposite "trailing or leading" to get correct readings

[@davidgarrison6936]

So this is why they are called MAZDA TECHS?? I get it now. Kidding. Great video...albeit WAY over my head... But insight to what i need to learn and study. Thx.

[@Drivenbymadness]

Yup :D Thanks! Yeah, it it quite a process, but if you wonna do it youself without a rotary compression tester, this is the only way :)

[@Kittypoopoo]

Just did an enging rebuild and the compression ratings are at about 6. Do I need to break in my engine or replace coils or something else? I am stumped

[@silvaer8699]

ANyone know if the compression psi is supposed to be from 90 to 120 or way higher?? first time dealing with rotary engines, Sorry if I sound like a newbie( that's what I am)

[@hemp64731]

Have a question, do you always do these videos at a quarter tank or is that were you fill it lol

[@thatshaggydude8063]

I dont have excel you should add that to your website.

[@Carboniotecable]

Ciao, ma il test, non sarebbe meglio farlo sulle candele superiori?

[@mithilesh2750]

Well explained

[@Drivenbymadness]

Thank you

[@garydeandeery]

Brilliant

[@OShihadeh]

Great!

[@jeroenlodewyckx4158]

On a hot or cold engine?

[@gotcha1737]

Great Video!THANKS........You sound a little like BORAT!

[@Drivenbymadness]

Thanks 😂

[@SoldfMC]

Just did a test with the "Rotary compression tester" from Classified performance Front - 6.08 - 5.66 - 5.46 Rear - 6.06 - 6.13 - 5.92 Would you say the front rotor has an "extreme" difference between rotor faces?

[@biometal770]

To me, it seems like one of your front apex seals is not optimal, seeing is that 2 of your compression readings are lower than the 3rd.

[@dimo6760]

So I have compression on the left rotor but not the right what would that mean ?

[@_alltheseprettylights_]

It means you have no compression in the rear rotor. New engine time.

[@DioDellaMuerte]

Smart Trick ;-)

[@Kamal-sj7it]

I was just going to ask you about the accuracy of the method you used in your other compression video. That's crazy

[@Drivenbymadness]

Kamal El it was semi accurate, but this one is done right and even more accurate :)

[@Kamal-sj7it]

THanks for the video

[@Drivenbymadness]

You're welcome :)

[@luisangelsantiagoluna2111]

Can you make a video about flodeed engine?? I need help

[@Drivenbymadness]

Here's a video that show's you how to de-flood :) kzbin.info/www/bejne/annEanqnbJeqhNU&t=

[@Drivenbymadness]

Or this one : kzbin.info/www/bejne/oJbRaGOwmrOAhrc

[@octapc]

I watched the part about removing the Leading spark plugs. Are you suppose to remove both at the same time and then test them or remove each spark plug one at a time?

[@Drivenbymadness]

HI, you remove one at the time, never both.

[@j.m.5995]

There's only one compression chamber my friend. If you remove the other plug for the same rotor you will have a large pressure leak.

[@octapc]

ahhh yes of course

[@erliches71]

I have bought a compression tester but in mine there wasn´t a valve like in youre´s is it a problem? I mean at 02:10 in your video. i tried my compression tester on my Audi A4 B5 and the compression is holded in my tool until i release the compression on the side from the tool.

[@Drivenbymadness]

erliches71 do you have the same compression tester as me?

[@Drivenbymadness]

erliches71 if you test the compression on a piston engine, you dont need to remove the valve. Leave it in and see whats the highest psi you get, and that is your compression

[@erliches71]

I have this here www.amazon.de/gp/aw/d/B01GVAKOUI/ref=mp_s_a_1_3?__mk_de_DE=ÅMÅZÕÑ&qid=1519286560&sr=8-3&pi=AC_SX236_SY340_FMwebp_QL65&keywords=kompressionstester . and yeah i know that i don't need to remove the valve for a normal piston engine but i want to buy an rx 8 and before i buy i want to check the compression. that's why I'm asking. my pressure release is on the side. and i got no valves in the adapter either not in the long hose. so is my tester wrong for rotary cars like the rx 8 ?

[@carguy1013]

hey what if the car/engine is fast and smooth on a test drive? Doesn't a fast car signal good compression? And if the temp gauge doesn't move after 2-3 pulls. Starts easily both cold and hot. Isn't that enough or one still needs to do this excessive compression test?

[@iansotomayor8788]

On a rotary you should always compression test before you buy one. It can feel pretty good and be on the verge of blowing up.

[@VinsUplifting]

@@iansotomayor8788 How so? If you have a quick hot start and as quick as cold start surely that should be good enough (obviously without an overpowered starter)?

[@thewhitewonderer3424]

My rx8 set up for a few months now when I start it I don't have good compression at all and I over heat pretty bad any idea what the problem could be?

[@Drivenbymadness]

Fans are old and weak or not engaging. Install fan control kit to turn on fans earlier. Stuck thermostat Air in cooling system Clogged Catalytic converter These are the simple things to check 1) Use an OBD to see at what temperature the fans turn on. If it's at 86°C it's ok the thermostat is working. The temperature must not exceed 105° C if it goes above 105, shut down the car immediately. 2) I would suggest you invest in an alluminium fan shroud. Mishimoto has a good one, check out my video. 3) If it's not the issue, take down the catalytic converter and check the honeycomb, to see if it's intact or clogged. Leave the car running so it reached trigger temperature and see if it overheats. DO this in a very well ventilated area outside. 4) You can take it to a mechanic and have him check all the above.

[@thewhitewonderer3424]

@@Drivenbymadness thank you very much will look into it this weekend thanks again man.

[@spiritbuu]

Which video editing software you using?

[@Drivenbymadness]

Adobe premiere pro cc :)

[@spiritbuu]

Driven by madness Thank you.

[@erliches71]

how do i figure out my Cranking RPM ? Should i read it from inside?

[@Drivenbymadness]

erliches71 You need to count how many pulses you have in 5 seconds. So record the video. put it in a video editing program, and make it start from the first pulse, and end 5 seconds later. Then count how many pulses you see or hear in this 5 second clip :)

[@erliches71]

Driven by madness Thank you very much!

[@Drivenbymadness]

erliches71 you're welcome 👌

[@altaccount2268]

The Excel link is broken

[@Drivenbymadness]

Thanks for pointing it out, the link has been fixed :) www.drivenbymadness.eu/downloads

[@calebklein4922]

I just got a compression test done recently at a Mazda dealer ship and they said my compression was low with rotor 1 having 6.3, 6.5, 6.9 and rotor 2 having 6.8, 6.4, 6.2. Just recently suddenly started having long crank times and a bit of lack of power and they told me it was probably due to the low compression readings. But according to this BAR chart it is still good? Do you think it might just be bad ignition coils or plugs?

[@j.m.5995]

Check make sure your cats are not restricted

[@Schafstreiber]

Hi, I'm about to buy a RX8 but I'm not quite familiar with the designation. It is a RX8 Revolution Alcantara of the year 2004. Is it still the Rx8 R1 model? Thank you for your help in forward :)

[@Drivenbymadness]

Yes, that's the S1 Rx8 (2004-2008). The S2 where also the R3 version comes in is 2009-2012. Hope that helps :)

[@DnsError80710102]

I never seen you post anything on snap chat

[@Drivenbymadness]

Dns_Error80710102 have you added me? I have a pretty active snapchat... What's your snap username?

[@johoed]

How do you know your cranking speed?

[@PhaNaTiiK]

let me know if you figures this out

[@HeavyMetalorRockfan9]

you cranking speed is calculated from the number of pulses you see, thats why you look for 5 seconds from the first pulse because then you can divide by 5 and multiple by 60 so you get the cranking speed

[@blueprinc3809]

Can’t I just ask the dealership to do my first one? Before I buy it ?

[@domchubs5836]

I tried to have a dealership do a test for me and they gave me an estimate of $280 just for the test

[@carlosvega622]

i thought you said to relocate the register plate number for more cooling 🤔

[@Drivenbymadness]

carlos vega you'll see a video about it soon :) (relocate and possibly drill some holes)

[@carlosvega622]

Driven by madness bro, do some exterior modification also like: 1.gt wing 2.bodykit 3.custom bumper 4.18" rim Not 1 day task. just do step by step.😃

[@Drivenbymadness]

carlos vega im gonna try to do that this summer bro. Im just indecided between the mazda speed wing or a gt wing 🤔

[@carlosvega622]

Driven by madness the spoiler choice id depend on bodykit choice. i will go for gt wing. reason ,if later after a few year , you feel like , dont want to wear gt wing anymore , you can put you gt wing to you other car . save money . its not going to be waste so what ever. 😃

[@Drivenbymadness]

carlos vega I like the thinking 😄 I also had an idea to buy a separate trunk, where I install a GT wing, and my original trunk where I have the mazdaspeed one. This way I can register the mazda one, and swap it for the gt once I get the papers 😜

[@phyx5395]

is 90 psi on both rotors good or will a rebuild be neccessary soon?

[@Drivenbymadness]

Phyx depends on the cranking speed. Use my method and see for your self :)

[@ennpty]

0:26 redsuns sticker xd

[@SirPsychonautic]

this is not how you do a rotary compression test. to get proper results, you need to remove the Schrader valve on the compression tester and watch the pulses as you are measuring 3 values from 1 spark plug hole. If you do this, you could potentially be masking the true problems with your engine. I was dumb and did this and had 120psi on my rx7 front and rear rotors, but when I used the proper method, it was about 70 psi per rotor face, which is about the same as what a Mazda compression tester would have given me (I have both methods).

[@alexgerling3686]

4 bar or less and its a definite rebuild

[@linck15]

Please god may he see this: if a have a compression tester that already shows bar do I need to use the convertion?

[@Drivenbymadness]

Hi, you need to convert them in PSI, so that they match exactly what i did in the video, and then also work for the normalizer, cause you can only input PSI.

[@linck15]

Driven By Madness my man!

[@markbell5483]

Is it possible to get a 0 on the first lead spark plud

[@Drivenbymadness]

0 is impossible, unless your housing is empty

[@markbell5483]

Driven by madness thank you. That sucks I’m getting a 0 with and with out the thing I. The end of the compression tester. The second plug is around 50. Time for a new motor. Love your videos

[@Drivenbymadness]

@@markbell5483 thats strange, but if your car hesitates a lot or doesnt event start at times, it could be due to low compression. But if the trailing spark plug gets a pulse, the leading should too. If both trailing and leading of one rotor are 0, then its time to save up

[@dokterbimmer7270]

yes

[@ozziegadgetbox2274]

Hi why are you flooring the gas pedal? Cheers

[@Drivenbymadness]

To fully open the throttle body and let the maximum amount of air inside. This gives you the most accurate result.

[@Nuclrz]

How to make your rx8 backfire?

[@Drivenbymadness]

You mean make the exhaust POP loud and shoot flames ? SImple. Get a full high flow exhaust system. Agency one is known to be one of the loudest with big pops. An important part is that to remove the cat and install a De-cat. This will make the car pop, even if it's stock :)

[@petescarport]

Awesome Nuclr install agency power dual resonator midpipe. Removed cat and gives nice pop

[@leduan11]

mach das mal während du beim Autohändler stehst und dich fragst ob der 110000 KM RX 8 was für dich ist.

[@Mitch3343]

Of course Brettus has his name kn this.

[@motodenta]

Still better than all fakes 3rd party compression testers from forums/ ebay and "Mazda specialists" aka monkey ratchets. at least you tryst the max reading !!!!

[@motodenta]

You need kg/m2 NOT BAR

[@Drivenbymadness]

New updated version :)

[@nanithefuck]

Was wondering if it was a re-upload ;)

[@Drivenbymadness]

Jay yup, it had to be done. But no more re-uploads, only fresh content :)

[@Flyingdutchy33]

I really need to have mine checked at the local specialist for ease of mind. And to convince the new owner that this car was properly taken care of.

[@Drivenbymadness]

Flyingdutchy33 well said 🏅 you're a model owner, keep it up 😉

[@Flyingdutchy33]

Aaaaand just got back from the rotary specialist who used the specific rotary tester on it. 7.2/7.2/7.2 Front and 6.4/6.7/6.9 Rear Apparently the rear rotor is more prone to wear because it sits closer to the flywheel (according to the specialist) Additionally, I had my SSV checked out. Turns out the previous owner switched the plugs around on them, so they have never worked when I had the car in my possession. Car drives like a dream now!

[@stevenseagal8669]

Why.

[@xXDragonTribalXx]

Easy Fix! Just need a Master degree in advanced spaceship fuel economics and some tools :D Doesnt this test flood the engine somehow?

[@Drivenbymadness]

No, cause we disconnect the fuel relay :)

[@eeacosta7220]

You.need to remove the shredder valve to check the compression on each chamber on each rotor. This compression test will not be accurate.on each rotor face.

[@aidankreltszheim3599]

Sheet: 6.6 ok but start saving up. Him: I got 6.6 which is very good

[@SparkingJin]

Lol😂

[@MJT-DA]

Jesus I don't think anyone is going to do that last part lol...

[@FroztiProductions]

So I gotta jack someones car up and follow a hundred steps before buying it jeeeez

[@FroztiProductions]

@bobagopaaa piston engine is no problemo but man on a rotary i feel like i gotta buy them dinner first!

[@WhuchakaV]

Just walk away if they dont want compression tests done lol

[@FroztiProductions]

@@WhuchakaV Oh man first guy I messaged 160k on original motor asked if he knows compression and he lost it. CYA!

[@carguy1013]

Exactly!!!

[@neverstoplearning382]

as easy as that. yea right.

[@jordanjorgensen1808]

Just a re upload

[@Drivenbymadness]

Jordan Jorgensen yup, previous version was a bit inaccurate needed to be revisited. This version is complete :) don't worry, no more reuploads 😉

[@jordanjorgensen1808]

Driven by madness k cool cuz I wanna see more new dope Rx-8 videos from you man!!!!!

[@Drivenbymadness]

Jordan Jorgensen awesome! Then hold down, because with march/april, things are gonna get super exciting and intense, when I get all my drift mods 😉 (seats,gauges etc..)

[@jordanjorgensen1808]

Driven by madness can’t wait!

[@Jimmy_Wei]

This is the "Easiest Way" to do a compression test on Rotary Engine. 1. Buy a GoPro, 2. Buy a Ratchet Extension 3. Buy a Ratchet 4. 22mm socket 3. Buy a Jack Stand 4. Buy a piston compression tester 5. Really Thin Twisters 6. Cross wrench 7. Jack 8. Cleaner 9. Bend nose plier 10. Very complicated movie editing software, you only need to learn a few hours to use it. 11. Buy a Microsoft Office. It will cost about $1000 to buy those parts, very cheap And It only takes about a day to do it, and you will finally get not inaccurate compression readings of your engine. Thank you very much.

[@octapc]

No doubt you have a smartphone. There is free video editing software, There is OpenOffice which is a free version similar to MS Office. Your car should already have a jack. So, I just saved you $800

[@TheByQQ]

Few hours of learning to follow simple directions from the video? He's not asking you to find a job as a CGI guy at Disney, he's asking you for simple edits you can make in every basic video editor. And you can get a trial of office.

[@GigiGranVisir]

Not easy at all: if you have the stock airbox, you must disassembly the whole, or it's impossible to reach the crankshaft sensor connector. It seems that just pulling out fuse and relais is not enough to get accurate measure..

[@23werex]

just take all plug wires out.

[@seangodley6075]

U can get it from underneath the car

[@shmyasir]

nice video I don't understand 2:09, from where this small valve comes from kzbin.info/www/bejne/n4m9hmqBgLxppMU Thanks

[@e47kz]

LMAO

[@Michaelajacksonfilms]

So essentially if you're buying a used RX8 you should probably Buy a new motor 1st then go shopping for the car.

[@Drivenbymadness]

Depends on the health of the engine that the rx8 you're buying has. I you have too much money, then you can buy a new engine and start super fresh :)

[@carguy1013]

@@Drivenbymadness hey what if the car/engine is fast and smooth on a test drive? Doesn't a fast car signal good compression? And if the temp gauge doesn't move after 2-3 pulls. Starts easily both cold and hot. Isn't that enough or one still needs to do this excessive compression test?

[@xMorbidArtx]

Buy one with decent or even failing compression, upgrade the ignition system, and drive the car as you slowly buy new engine parts to eventually rebuild. Thats what i did.

[@loreleiking9369]

45 down voters were down voting the car, not the video.

[@jairoumana4569]

First

[@Drivenbymadness]

Jairo Umana yeah bro 💪💪😄

[@jameskaras4345]

main idea...dont ever get an RX 8. it will fuck you up side down.

[@Shadow0fd3ath24]

Or just rent a tester from one of the forum or ebay guys lmao

[@mehine2]

1. Remove driver side wheel 2. Put into gear 3. Warm up the engine 4. Yeah... it really doesn't matter anymore Who followed these steps? PS! DISCLAIMER says: ..."DrivenByMadness assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. "...